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Commit a63cdc76 authored by Reynold Xin's avatar Reynold Xin Committed by Andrew Or
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[SPARK-10612] [SQL] Add prepare to LocalNode. 

The idea is that we should separate the function call that does memory reservation (i.e. prepare) from the function call that consumes the input (e.g. open()), so all operators can be a chance to reserve memory before they are all consumed.

Author: Reynold Xin <rxin@databricks.com>

Closes #8761 from rxin/SPARK-10612.
parent b6e99863
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